Roof service past error A6A5 and trunk stuck open shells in but not latched

[khalidfh]

OK, lets take a break and tomorrow I will be working on the car.
In this video, Dan remove the CTM to confirm that there is a discontinuity to shell 2 microswitch...

I wonder if he used INPA it will show the state of microswitch...
In my case I am confident the microswitches changing states and that when I moved the hartop manually and follow the states live using ISTA...

NOW, do I need to extract the CTM and take some reading?
Tomorrow I will use INPA to monitor while pressing the opening and closing buttons.

 

[RobbiZ4]

Well, I didn't see a wrong or faulty microswitch state in any of the screenshots. If there's a break or a short, the right circles in INPA will be couloured in black. Not yet seen, right?

So forget Dan's video, as I generally don't like it due to a constructed, but not real life fault situation.

The key point is that the hydraulic pump doesn't start to run.

Requirements:

• No roof fault codes.
• A bunch of prerequisites.
• Functional open/close buttons in the car.
• Working salmon relays. A fault code is placed only if missing.
• An intact red fuse box with +12V on top of each connector, grey is for the pump. No fault code if defective.
• An intact fuse of the CTM's power supply.
• A CTM as correct working ECU, can be tested with a replacement part of the same generation. Fault codes not guaranteed on several issues.
• A pumps motor that is able to turn in both directions. Fault code only if not connected.
• Of course 3 or 4 connected solenoids. A fault code is placed if missing/disconnected.
• Correct sensor signals, low or high. Broken wires will place a fault code.
• Healthy hall sensors. If rusty inside, the CTM will recognise it, but no fault code will be placed. Sometimes there is a warngong while moving the roof.

As I can't see any missing point based on the provided information, the biggest question for me is:

Why doesn't the pump start to run when pressing one of the two roof buttons in the car, as we can't see any abnormal prerequisits?

If the CTM will be able to switch the 2 salmon relays and start the pump's motor, only then we can think about wrong signals, missing solenoids, hydraulic leaks, broken wires, but not before.

Update
Some typo's corrected

 

[B21]

...every Z4E89 is worth converting to good.

You will go to Heaven…St Robbi..bless you my child !

 

[khalidfh]

Well, I didn't see a wrong or faulty microswitch state in any of the screenshots. If there's a break or a short, the right circles in INPA will be couloured in black. Not yet seen, right?

Yes you are right, no coloured circle appeared.

So forget Dan's video, as I generally don't like it due to a constructed, but not real life fault situation.

The key point is that the hydraulic pump doesn't start to run.

Requirements:

• No roof fault codes.

None

• A bunch of prerequisites.

What are they? Maybe windows state, according to the last set of screenshots, this is the blocker.
The CTM don't send signals to the pump and this is clear by monitoring the relays state while pressing both buttons using INPA.

• Functional open/close buttons in the car.

I remeber the state for those two buttons changed when pressed, but will double check again.

• Working salmon relays. A fault code is placed if missing.

No fault, new relays

• An intact red fuse box with +12V on top of each connector, grey is for the pump. No fault code if defective.

Can it be checked using INPA?
There was a page showing voltage and both read 12+V.
But I can reach this box which is near the battery to the right and measure all connectors.

• An intact fuse of the CTM's power supply.

Where is this fuse?
But the CTM is working as it showing "roof system" on the dash. Also when moving the car, another caution appears "roof not latched". So I assume the CTM is connected and reading and also communicate with other modules.

• A CTM as correct working ECU, can be tested with a replacement part of the same generation. Fault codes not guaranteed on several issues.
• A pumps motor that is able to turn in both directions. Fault code only if not connected.

Checked. No rust, both ways working. Checked by jump power direct to the pump.

• Of course 3 or 4 connected solenoids. A fault code is placed if missing/disconnected.

No code

• Correct sensor signals, low or high. Broken wires will place a fault code.

No code

• Healthy hall sensors. If rusty inside, the CTM will recognise it, but no fault code will be placed. Sometims a gong can be heard while moving the roof.

Chrcked, show no rust niether broken cover.

As I can't see any missing point based on the provided information, the biggest question for me is:

Why doesn't the pump start to run when pressing one of the two roof buttons in the car, as we can't see any abnormal prerequisits?

Only windows states are the suspecious and source of block. These windows overided and operated using scan tool.
When pressing, I hear click near the glove box, and sounds like brakage of a circuit.... THIS SOUND BOTHERED ME A LOT....

If the CTM starts it, then we can think about wrong signals, missing solenoids, hydraulic leaks, broken wires, but not before.

 

[RobbiZ4]

Can it be checked using INPA?
There was a page showing voltage and both read 12+V.
But I can reach this box which is near the battery to the right and measure all connectors.

Well you already confirmed power on the red fuse box next to the battery, especially the grey plug. Please doublecheck! Can be checked only with a multimeter.

Both "actually all" of them showing 12+v and 14+v while engine is running.

The CTM fuse is ok, as we can access it with our tools.

All other assumptions are correct.

 

[khalidfh]

Well, I didn't see a wrong or faulty microswitch state in any of the screenshots. If there's a break or a short, the right circles in INPA will be couloured in black. Not yet seen, right?

So forget Dan's video, as I generally don't like it due to a constructed, but not real life fault situation.

The key point is that the hydraulic pump doesn't start to run.

Requirements:

• No roof fault codes.
• A bunch of prerequisites.
• Functional open/close buttons in the car.
• Working salmon relays. A fault code is placed if missing.
• An intact red fuse box with +12V on top of each connector, grey is for the pump. No fault code if defective.
• An intact fuse of the CTM's power supply.
• A CTM as correct working ECU, can be tested with a replacement part of the same generation. Fault codes not guaranteed on several issues.
• A pumps motor that is able to turn in both directions. Fault code only if not connected.
• Of course 3 or 4 connected solenoids. A fault code is placed if missing/disconnected.
• Correct sensor signals, low or high. Broken wires will place a fault code.
• Healthy hall sensors. If rusty inside, the CTM will recognise it, but no fault code will be placed. Sometims a gong can be heard while moving the roof.

As I can't see any missing point based on the provided information, the biggest question for me is:

Why doesn't the pump start to run when pressing one of the two roof buttons in the car, as we can't see any abnormal prerequisits?

If the CTM starts it, then we can think about wrong signals, missing solenoids, hydraulic leaks, broken wires, but not before.

What a detailed and comprehensive reply! So informative and right to the point.
Honestly, all your posts—here, to other posts, and on other forums—are consistently amazing. The amount of time and advice you share is incredible and really appreciated.
I’m seriously impressed and have so much respect for what you do.

 

[khalidfh]

For the love of God…pour 5 gallons of best high octane fuel over this over the m@ther f@cker and put us out of our misery,..

It will be fixed, soon or later... I guess we are so close, hopefully

 

[RobbiZ4]

Morning

Task 1 (it's a must)
Check the 2 roof buttons with INPA

Idea:
Let's close the roof manually, lock it electrically (front) and hydraulically (trunk, roof shell2), if the pump works fine.

With that we should get into a correct status to re-register all windows.

ToDo:
I'm just re-reading this topic to see, if I've forgotton a detail:

R

Thread 'Tough Roof problem 2009 E89'

Jun 11, 2025

So this is not going to be an easy question. I am brand new to the BMW world and just got my E89 10 days ago. In that time i have learnt a lot about BMW, the Z4s and the E89 roof.

My hard top is not folding away, I push the button (internal trunk cover is latched), the windows roll down, I hear some clicks in the trunk(I presume the locking latches to keep the roof on), then nothing. I have no error codes. So far this is what I have done:

-Checked the fuse in passenger footwell
-Taken out the salmon relays and tested them to make sure they engage(clicking with 12v), and the resistances...

• Rob E89

 

[RobbiZ4]

ToDo:
I'm just re-reading this topic to see, if I've forgotton a detail:

R

Thread 'Tough Roof problem 2009 E89'

Jun 11, 2025

So this is not going to be an easy question. I am brand new to the BMW world and just got my E89 10 days ago. In that time i have learnt a lot about BMW, the Z4s and the E89 roof.

My hard top is not folding away, I push the button (internal trunk cover is latched), the windows roll down, I hear some clicks in the trunk(I presume the locking latches to keep the roof on), then nothing. I have no error codes. So far this is what I have done:

-Checked the fuse in passenger footwell
-Taken out the salmon relays and tested them to make sure they engage(clicking with 12v), and the resistances...

• Rob E89

Done. Solution was to replace the CTM with a new one. Unfortunately without any identified reason, why it didn't operate the roof. Very unusual!

 

[khalidfh]

To re-register the roof, can it be done when it is fully open? Or it must be fully closed?

 

[RobbiZ4]

To re-register the roof, ..

The windows, not the roof.

Btw, there is a "Reset CTM" option in ISTA if you select the CTM from the ECU page.

Maybe it's available in INPA Karosserie/body CTM F6 as well.

You may give it a try even I did not find any description about it's purpose. Never had a measurable result.

 

[khalidfh]

Done. Solution was to replace the CTM with a new one. Unfortunately without any identified reason, why it didn't operate the roof. Very unusual!

So, shall we re-register or just replace the CTM?
I prefer we tried registering before replacing the CTM

 

[khalidfh]

The windows, not the roof.

Btw, there is a "Reset CTM" option in ISTA if ylou select the CTM from the ECU page.

You may give it a try even I did not find any description about it's purpose. Never had a measurable result.

Sorry, I meant re-register the windows...
My fault

I think I tried that one...
But lets first try registration

 

[RobbiZ4]

Sorry, I meant re-register the windows...
My fault

I think I tried that one...
But lets first try registration

At 1st the 2 roof buttons.

Former "button" post

Post in thread 'A670 code in CTM after Convertible top wiring harness replaced'

Oct 26, 2025

Correct, it's a 20-pole connector.

Another question:
What about your seat heating buttons? Do they work? If not, a fuse could have been blown to support power supply of this module.
Assumption: pin 14 = GND, 17 = VCC from fuse 05 (10A).

Problem identified. There is no continuity between pins 2/3 and 13/14. Now what do I do?

Another idea to test your module:
Connect it with the 20-pin connector and measure GND from the two buttons (pins 2+3) with a beeper connected to VCC or a multimeter connected to GND.

And a better question: how on earth could that have...

• RobbiZ4

• 

There is no registering option for the CTM.

AFAIK, windows can be registered only with a perfectly closed roof.

 

[khalidfh]

OK, buttons change the states



that was closing and this is opening

This from JBBF window states


So, let's close the shells manually and try initialize the windows.

after reading the post regarding the CTM, I guess mine is the CTM as well. But lets keep it the last step

So nowm I can raise the shells to top, and lock shell 1 to the windscreen, but how can I lock the rear shell and the trunk?

 

[RobbiZ4]

The tester you mentioned looks pretty useful, I bought one. Thanks.

Did you buy this or a similiar tool and is it already available?




And another, before never asked question:
Is there a roof module placed next to the CTM, i.e. something like the following:

M

Thread 'SmartTOP for Z4 E89 experience and maybe a groupbuy?'

Feb 28, 2010

Hi,

I just finished testing the Reinhold Cabrio-module. Right now I am testing the mods4cars SmartTOP module. Stefan from Mods4cars was kind enough to send me a test module to test it. I want to share my experience of the 2 difference modules so it's easier for you guys to make a choice between these modules.

Let's start with the Reinhold module:


The manual was very clear and the installation was easy to do, just make sure to take your time so you won't damage any parts of your car

After installation of the Reinhold module, I discovered a problem with the module:
1...

• Maaij
• Replies: 5
• Forum: E89 Z4 discussion

If there is an issue with the power supply of these modules or the two CAN bus pins which are rerouted into these modules, it can fail even while moving the roof.

 

[khalidfh]

Did you buy this or a similiar tool and is it already available?

Yes, I bought it direct after you mention it before, it is great tool. So, it is available

And another, before never asked question:
Is there a roof module placed next to the CTM, i.e. something like the following:

M

Thread 'SmartTOP for Z4 E89 experience and maybe a groupbuy?'

Feb 28, 2010

Hi,

I just finished testing the Reinhold Cabrio-module. Right now I am testing the mods4cars SmartTOP module. Stefan from Mods4cars was kind enough to send me a test module to test it. I want to share my experience of the 2 difference modules so it's easier for you guys to make a choice between these modules.

Let's start with the Reinhold module:


The manual was very clear and the installation was easy to do, just make sure to take your time so you won't damage any parts of your car

After installation of the Reinhold module, I discovered a problem with the module:
1...

• Maaij
• Replies: 5
• Forum: E89 Z4 discussion

If there is an issue with the power supply of these modules or the two CAN bus pins which are rerouted into these modules, it can fail even while moving the roof.

After 15 years, Yes I am interesting in groupBuy
I would like to buy one and try....

 

[khalidfh]

Hi,
Hope you all had a great Christmas vacation .

Welcome back to the mystery
Is this normal? Rear window...

 

[khalidfh]

I bought some tools, needle probes and oscilloscope to read signals.

 

[Chippie]

Hi,
Hope you all had a great Christmas vacation .

Welcome back to the mystery
Is this normal? Rear window...
View attachment 289313

The rear glass does stick up slightly (on mine anyway) but perhaps not quite as much as yours